In addition to providing a very effective solution for standard lighting applications in benign environments, DER-340 copes with conditions of poor ventilation and high temperatures in industrial applications through the use of ceramic output capacitors and an accurate hysteretic thermal shutdown feature included in the LinkSwitch-PH IC.

Comments Andrew Smith, product marketing manager for Power Integrations: “Power supplies are often the weak link in LED lamps. This is especially true for industrial and infrastructure lighting applications where difficult operating conditions can quickly cause traditional power supplies to fail. This reduces the cost-effectiveness of solid-state lighting and conflicts with fixture lifetime expectations built on the basis of the longevity of LEDs alone. With high power conversion efficiency and no high-voltage aluminum electrolytic bulk capacitors, DER-340 provides an architecture that avoids this problem and delivers on the long-lifetime promise.”

The single-stage topology also reduces component count, allowing developers to use single-sided boards and smaller enclosures.

DER-340 is said to be highly energy-efficient – above 88% at 230 VAC and over 87% at 120 VAC.

Output current tolerance is less than 5% across line, load and temperature.

Power Integrations’ LinkSwitch-PH ICs feature comprehensive integrated protection and reliability features including: output open circuit / output short-circuit protection with auto-recovery; line input overvoltage shutdown which extends voltage withstand during line faults; and auto-recovering thermal shutdown with large hysteresis that protects both components and the PCB.

Dr. Stamatis Georgoulis | Cobham WirelessMeasuring up to the NB-IoT revolutionThere is a rapidly growing demand for making connections to all kinds of devices as the Internet of Things (IoT) starts to become a reality. Well over 10 different standards are already being proposed for these low-power machine-type communications (MTC) applications.